Leviton 7765C 50Amp, 250V DC/600V AC, Non-NEMA, 3P, 4W, Black & White Locking Plug, Industrial Grade, Grounding &ndash; Black-White Super Tough Nylon Body Resists Damage From Severe Impact, Abrasion and Chemicals NEMA and Non-NEMA Configurations Available Solid Brass Blades And Contacts Feature Improved Conductivity, Low Resistance, Low Heat, and Long Life Internal wiring chambers isolate individual conductors to prevent flashover, arcing, excessive heat buildup and stray strands of wire Color-coded wire entrance holes for simple, easy wiring